The MacDon drapers are something else. Usually, you can go from running a combine at a given speed, say 5 mph with a 30' Auger, to running a 36' MacDon draper at the same speed. The combine will use less fuel per acre. Be careful though because you really should buy the correct model for what you want to do with it. There are the 962 and 963 models which are good for cutting wheat and barley (off the ground). I do not advise cutting on the ground with either the 962 or 963. The 973 is more advanced and can cut off the ground or you can cut right on the ground (soybeans, etc). The 974 is the flexible draper. You can lock the flex out very easily to cut off the ground or unlock the flex and cut right on the ground. With adapters, the 873 has the best float I've seen. THe 872 is OK but not as good. If you will be cutting on the ground make sure to get the AHH option, it is called a Float Optimizer.